Rod-rolling mill



(No Model.)

- F. H. DANIELS ROD ROLLING MILL, $10 419,422. Patented Jan. 14,1890.

WIN/E55 E5 JW/EA/TUR mama W, gwfi/hmgeg UNITED STATES PATENT ()EEICE.

FRED H. DANIELS, OF WORCESTER, MASSACHUSETTS.

ROD-ROLLING MILL.

SPECIFICATION forming part of Letters Patent No. 419,422, dated January14, 1890. Application filed May 24, 1889- Serial No. 311,962. (Nomodel.)

To aZZ whom, it may concern:

Be it known that I, FRED H. DANIELs'a citizen of the United States,residing at WVorcester, in the county of WVorcester and State ofMassachusetts, have invented certain new and useful Improvements inRolling- Mills, of Which the following, together with the accompanyingdrawings, is specification sufficiently full, clear, and exact to enablepersons skilled in the art to which this invention appertains to makeand use the same.

The object of my presentinvcntion is to provide a rolling-mill that canbe operated with greater economy and a higher degree of practicalefficiencyin the production of Wire rods and to arrange the rolls andguides in such manner that the rods or rolled product can beautomatically advanced through the mill at high speed and worked withoutliability of escaping or creating waste.

To this end my invention consists in the features of improvementhereinafter described and claimed.

In the drawings, Figure 1 is a front elevation, Fig. 2 is a plan view,and Fig. 3 is a transverse section, of so much of a rollingmill as willillustrate the nature of myinvention.

In the present drawings I have shown a mill embracing only four pairs ofrolls; but it will be understood that any desired number of pairs ofrolls may be employed, ar-' ranged in the order specified, as may benecessary for giving the required amount of reduction to the rod.

In accordance with my present invention, the pairs of rolls are arrangedin two rows for backward and forward feeding of the rod, or in sets oftwo pairs of rolls in each set, one pair in front of another, the firstpair of rolls in the order of action on the metal being fitted to impartan oval cross-section and the second pair a square cross-section, and soon alternately throughout the series. By oval I mean all cross-sectionswhich are long one Way and short the other, and by square I mean allcross-sections whose length and width are substantially the same.

In the drawings, 1 and 3 denote the pairs of rolls that impart the ovalcross-sections to the bar or rod, and 2 and 4 the pairs of rolls thatimpart the square section. From the rolls 1 the bar passes straight tothe rolls 2; likewise from the rolls 3 to the rolls 4'. Between thepairs of rolls that are directly in line I arrange-straight guides 5,which are suitably formed for twisting the oval crosssection ninetydegrees, (except when the second pair of rolls is disposed with verticalaxes, as may in some cases be done,) so that it will enter thesucceeding rolls at right angles to the cross-section as delivered fromthe rolls that give the oval. From the rolls 2 to the rolls 3, (and fromthe rolls 4 to succeeding pairs when used,) I arrange a semicircularguide 8, having an outer rim that directs the end of thesquare-sectioned rod around the curve and returns it into the enteringguide of the oval pass-rolls. Thus the ovals are fed directly forwardand twisted, while the squares are fed in the semicircular return eachfor double action and making the ovals in the first pair of rolls ineach set and the squares in the second pair of the sets the semicircularor repeater guides are required to carry only the square-sectioned rods,which can be automatically returned and entered more surely than ovalscan be entered into the bite of the rolls, while the oval sections areconducted direct or in a substantiallystraight line by the guides 5 asthey pass the shorter distance from the first to the second pair ofrolls, which they meet with the vigor of a straight thrust. Consequentlythere is less liability of the rolls failing to bite on than there wouldbe under other conditions; hence the automatic efficiency of themechanism is greatly enhanced and a more perfect action and higher rateof speed are attainable by this improvement.

The form of the rod-section at various stages of its reduction isindicated on Fig. 2 at corresponding positions in the mill, as at 10,11, 12, 13, and 14. p

The construction of the journal-bearings, housings, connectin g-gearing, and operatingshafting for supporting and rotating the several pairsof rolls at proper speeds is disposed as herein illustrated, with therolls arranged in two rows, end to end, adjacent to each other, and sothat the passes are all in the same plane parallel with the axes, thedriving-gearing being located beyond the rolls at the right and left. Ifa greater number of pairs of rolls are employed, then the two lines ofrolls and gearing would be extended in the same order by addingalternately housings for gears and housings for rolls, (or vice versa,)and additional repeaters or semicircular guides similar to that shown atS for returning the end of the rod or bar for passage through saidadditional pairs of rolls.

It will be understood that I do not herein claim the feature of placingpairs of rolls in two lines for duplex action (1'. 8., the passing ofthe product through two pairs at each entry back and forth,) as I havein my previous Letters Patent, No. 387,4:95, claimed a rollinglnillembracing such feature.

\Vhat I claim as myinvention, to be herein secured by Letters Patent,is-

1. A rolling-mill for the purpose specified, having its pairs of rollsarranged with their passes all in the same horizontal plane and disposedfor operating in duplex order the alternate pairs of rolls grooved forforming oval cross-sections and square cross-sections, respectively, andprovided with guides that conduct the oval bar erred in a straight linefrom the oval-grooved rolls to the squaregroovcd rolls and withhorizontal semicircular repeater-guides having an open top and aflangejthat conduct the square bar or red from the square-grooved rollsto the oval grooved rolls, substantially as set forth.

2. I11 a rolling-mill for the purpose specified, a series of pairs ofrolls arranged in sets of two pairs, the first pair in each set havinggrooves that form the bar or red to an oval cross-section and the secondpair in each set having grooves that form a square cross-section, thediiterent sets of rolls being all disposed with their passes in a commonplane parallel with their axes, in combination with a twisting guidethat conducts the oval rod in a substantially-straight line from thefirst to the second pair of rolls, and a semicircular open-toppedrepeater-guide in the plane of the roll-passes, having anupwardly-projecting flange that conducts the square rod from said secondpair of rolls around the return-curve and directs it into the firstpairof rolls of the next succeedil'ig set, and means, substantially asdescribed, for imparting rotative motion to the rolls, as set forth.

lVitness my hand this 20th day of May, A. D. 1889.

FRED II. DANIELS.

\Vitnesses:

CHAS. ll. BURLEIGH, ELLA P. BLnNUs.

